[INFO] cloning repository https://github.com/jakob753951/chess_ai
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakob753951/chess_ai" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob753951%2Fchess_ai", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob753951%2Fchess_ai'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f428e7573a3172ae9b3b52ca60025dd682a66837
[INFO] checking jakob753951/chess_ai against try#6619027b13a87a3597115f2c8231f107bf3a7a5f for pr-139624
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob753951%2Fchess_ai" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jakob753951/chess_ai on toolchain 6619027b13a87a3597115f2c8231f107bf3a7a5f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jakob753951/chess_ai
[INFO] finished tweaking git repo https://github.com/jakob753951/chess_ai
[INFO] tweaked toml for git repo https://github.com/jakob753951/chess_ai written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jakob753951/chess_ai already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking jakob753951/chess_ai against try#6619027b13a87a3597115f2c8231f107bf3a7a5f for pr-139624
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakob753951%2Fchess_ai" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jakob753951/chess_ai on toolchain 6619027b13a87a3597115f2c8231f107bf3a7a5f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jakob753951/chess_ai
[INFO] finished tweaking git repo https://github.com/jakob753951/chess_ai
[INFO] tweaked toml for git repo https://github.com/jakob753951/chess_ai written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jakob753951/chess_ai already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6028bc2bf83112cf21d1ee3e7f6b674dc30e47d759d645e77d5986bbfb704796
[INFO] running `Command { std: "docker" "start" "-a" "6028bc2bf83112cf21d1ee3e7f6b674dc30e47d759d645e77d5986bbfb704796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6028bc2bf83112cf21d1ee3e7f6b674dc30e47d759d645e77d5986bbfb704796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6028bc2bf83112cf21d1ee3e7f6b674dc30e47d759d645e77d5986bbfb704796", kill_on_drop: false }`
[INFO] [stdout] 6028bc2bf83112cf21d1ee3e7f6b674dc30e47d759d645e77d5986bbfb704796
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+6619027b13a87a3597115f2c8231f107bf3a7a5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66db12133f1e1b7eff1abc056284f03cb5cf8fbbdfec6a27989fcd799b215bf5
[INFO] running `Command { std: "docker" "start" "-a" "66db12133f1e1b7eff1abc056284f03cb5cf8fbbdfec6a27989fcd799b215bf5", kill_on_drop: false }`
[INFO] [stderr]     Checking chess_ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/chess/mod.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CastlingState` is never constructed
[INFO] [stdout]  --> src/chess/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct CastlingState {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]   --> src/chess/mod.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum PieceType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Board` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Board {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/chess/mod.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CastlingState` is never constructed
[INFO] [stdout]  --> src/chess/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct CastlingState {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PieceType` is never used
[INFO] [stdout]   --> src/chess/mod.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum PieceType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Piece {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Board` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Board {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]   --> src/chess/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "66db12133f1e1b7eff1abc056284f03cb5cf8fbbdfec6a27989fcd799b215bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66db12133f1e1b7eff1abc056284f03cb5cf8fbbdfec6a27989fcd799b215bf5", kill_on_drop: false }`
[INFO] [stdout] 66db12133f1e1b7eff1abc056284f03cb5cf8fbbdfec6a27989fcd799b215bf5